Optimization of Roof Connection Scheme of Upward Drift Filling Mining Method
In order to solve the problems of high requirements,difficulty and high cost of the approach filling and roof connection technology of the upward drift filling mining method,the route layout and filling structure were optimized.Through the downhill construction of each stoping road,the sand chamber is formed at the head of the stoping road,and the upper open filling retaining wall is set up at the entrance of the stoping road.When the stoping road is connected to the top filling,the natural slope of the top plate of the stoping road and the slurry pressure in the filling pipeline are used to achieve the roof connection filling.For the local uneven roof area,the vibration of the filling pipeline is used to achieve the local roof connec-tion filling.The roof connection of new scheme is convenient to observe,the process is simple,the cost is low,the filling retaining wall is low and the safety is good,so it is easy to popularize and apply.
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万方数据
维普
